diff --git a/Registry.Dockerfile b/Registry.Dockerfile
index f0d8d417..275faacd 100644
--- a/Registry.Dockerfile
+++ b/Registry.Dockerfile
@@ -1,6 +1,6 @@
 ARG PROJECT=ProjectOrigin.Registry
 
-FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:9.0.305 AS build
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:9.0.308 AS build
 ARG PROJECT
 
 WORKDIR /builddir